Here in catalonia, Spain, there is a tradition call it "Día de Sant Jordi".

The leyend tells there was a dragon attacking a kingdom, the people, scared of the monster, decided to send him two lambs to satisfy his hunger. But once the animals start to be scarce, they began to send one person decided by a raffle; the family which lost a member received a lot of riches.

One day, the princess was choosen and sent to the Dragon's Cave, but luckily she found the knight Sant Jordi on her way.

Once the knight listened her story he decided to face the dragon. He succesfully kill the monster hammering a sword on his heart. From the dragon's blood sprout up a beautiful flower which the knight Sant Jordi offered to the princess.

This is what I wanted to reproduce: The instant when the magical flower emerged from the dragon's blood.